Use the paragraph to answer the prompt.
Most forest fires and wildfires are natural. They clear away debris, old brush, and dying trees, leaving heartier trees better able to grow. In fact, some trees only produce seeds when heated by fire. If a wildfire removes thick shrubs and undergrowth, the water supply increases, which helps other plants and local animals. Fire may also kill predatory insects or pests that live on and damage otherwise healthy trees.
In two sentences, identify the main idea and at least one supporting detail of this paragraph.
The main idea of this paragraph is that most forest fires and wildfires are natural and have beneficial effects on the ecosystem. One supporting detail is that forest fires clear away debris and brush, allowing heartier trees to grow.
What are nudibranch? Only some of the most colorful sea creatures on Earth! These marine mollusks boast a variety of unique shapes and colors, and they live anywhere in the world's oceans, from the tropics to Antarctica. There are many different types of nudibranchs, some no longer than an inch, and some as long as two feet! Some use toxic appendages to defend themselves, while others use camouflage. Some even make their own chemicals to keep predators at bay. Why do nudibranchs have these defenses? Because they are naked! Nudibranch means "naked gills," so named for their soft bodies and their exposed gills, which sit atop their backs. While common to the ocean, these unusual creatures can be spotted on underwater dives.
In 2–3 sentences, summarize the information in the paragraph.